ブルー水素製造のためのSMR-吸着統合システム：CO2回収と水素精製のCFD解析

Integrated SMR-Adsorption System for Blue Hydrogen Production: CFD Analysis of CO₂ Capture and Hydrogen Purification (原題)

Allam AN, Qasem NA, Nemitallah MA, Ben-mansour R, Habib MA

Research Squareプレプリント2026-08-25#CCUS経営インパクト: コスト削減対象セクター: power

DOI: 10.21203/rs.3.rs-10279933/v1

原典: https://doi.org/10.21203/rs.3.rs-10279933/v1

🤖 gxceed AI 要約

日本語

本研究は、SMRと吸着ユニットを統合したブルー水素製造プロセスを提案し、CFD解析によりCO2回収と水素精製の性能を評価した。低温・高圧・低GHSV条件でCO2破過時間が延長し、回収量と水素純度が向上することを示した。設計指針を提供する。

English

This study proposes an integrated SMR-adsorption process for blue hydrogen production and evaluates CO2 capture and hydrogen purification via CFD. Results show that low temperature, high pressure, and low GHSV extend breakthrough time and improve capture and purity, offering design guidance for efficient systems.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本は水素基本戦略でブルー水素を重要な移行技術と位置づけており、本研究成果は国内の水素供給チェーン構築やCCS事業の設計に示唆を与える。また、SSBJ開示における水素関連投資の技術的裏付けとしても有用。

In the global GX context

Globally, blue hydrogen is seen as a bridge technology in the energy transition. This study provides quantitative design insights for CO2 capture in SMR processes, relevant to ISSB-aligned disclosure of transition plans and low-carbon hydrogen certification schemes.

👥 読者別の含意

🔬研究者:Provides validated CFD methodology and operating parameter analysis for integrated SMR-adsorption systems.

🏢実務担当者:Offers design guidance for optimizing blue hydrogen production units to improve CO2 capture and H2 purity.

🏛政策担当者:Supports evidence-based policy for promoting blue hydrogen as a low-carbon technology.

📄 Abstract（原文）

<title>Abstract</title> Blue hydrogen is a low-carbon energy carrier produced from natural gas when carbon emissions are captured. The primary method of producing it is steam methane reforming (SMR), a process that separates hydrogen from natural gas but generates large quantities of carbon dioxide. This study proposes an integration process combining SMR, a heat exchanger, and a fixed-bed adsorption unit to enhance hydrogen production <italic>via</italic> carbon capture after reforming. A computational fluid dynamics (CFD) analysis was developed using the transient, axisymmetric, two-dimensional ANSYS Fluent model, validated against experimental data from the literature. A previously validated SMR model was used by sequentially coupling the reformer outlet to a downstream cooler/condensate knock-out unit, followed by a fixed-bed adsorption column. The adsorption system performance is evaluated under various operating conditions, including heat exchanger outlet temperature (298–448 K), adsorption pressure (0–20 bar), CO 2 /H 2 O ratio (25/75 to 75/25%), and gas hourly space velocity (GHSV: 100–500 h − 1 ). The adsorption unit is analyzed using a breakthrough curve approach. The results showed that lower temperature delayed CO₂ breakthrough markedly (680 s at 298 K vs. 70 s at 448 K); higher pressure increased capacity (q CO₂ rose from 0.75 to 2.4 mol/kg when pressure increased from 0 to 20 bar); higher CO₂ in the feed accelerated saturation (breakthrough advanced from 850 s at 25% CO₂ to 520 s at 75% CO₂); and increasing GHSV shortened bed life (680 s at 100 h⁻¹ vs. 100 s at 500 h⁻¹). The results showed that the best overall operating conditions for long bed life and high capture were low temperature, high pressure, moderate CO₂ content, and low GHSV, which improve CO₂ capture and H₂ purity, offering design guidance for efficient blue hydrogen production systems.

🔗 Provenance — このレコードを発見したソース

Research Square https://doi.org/10.21203/rs.3.rs-10279933/v1first seen 2026-08-26 04:20:36 · last seen 2026-09-08 04:21:55

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